OPERATIONAL GUIDE
IST8314 08/18
INITIAL PREPARATION
The meter is supplied complete with a 9V battery. Remove the
battery compartment cover on the back of the meter, install
the battery while paying attention to its polarity.
Always remove the electrode protective cap before taking any
measurements. If the electrode has been left dry, soak the tip
in
HI70300
storage solution for half an hour to reactivate it.
Connect the pH electrode to the DIN connector on the top of the
instrument. Turn the meter ON by pressing the
ON/OFF
key.
The instrument will display all used tags
for few seconds followed by the battery
percentage.
TAKING pH MEASUREMENTS
To take a pH measurement simply submerge
the electrode tip (at least 4 cm / 1½”) into
the sample to be tested.
Select the pH mode. Shake briefly and
wait a couple of minutes for the reading to
stabilize. The display will show the pH value
automatically compensated for temperature
variations.
In order to take accurate pH measurements,
make sure that the instrument has been calibrated for pH
before use. If measurements are taken in different samples
successively, it is recommended to rinse the electrode thoroughly
to avoid cross-contamination. After cleaning, rinse the electrode
with some of the sample to be measured.
TAKING ORP MEASUREMENTS
Connect the ORP electrode to the DIN connector
on the top of the meter.
To enter the “mV” mode (ORP, Oxidation
Reduction Potential) turn the instrument ON
and press the
mV
key. To take the mV measurement of a
sample submerge the ORP electrode tip (at least 4 cm / 1½”)
into the solution to be tested. Wait a few minutes for the
reading to stabilize.
TAKING TEMPERATURE MEASUREMENTS
Turn the instrument ON, press the
TEMP
key
and allow the reading to stabilize. To select
temperature unit press
TEMP
key while in
temperature mode.
Note:
If the reading is out of the specific range the range
limit is displayed blinking.
For greatest accuracy, frequent calibration of the instrument is
recommended. The instrument should be recalibrated for pH:
a) whenever the pH electrode is replaced
b) at least once a month
c) after testing aggressive chemicals
d) where extreme accuracy is required
PREPARATION
Pour small quantities of pH7.01 (
HI7007
) and pH4.01
(
HI7004
) buffer solutions into two clean beakers.
For accurate calibration use two beakers for each buffer
solution, the first one for rinsing the tip of the electrode, the
second one for calibration. In this way contamination of the
buffers is minimized.
To obtain accurate readings, use pH7.01 (
HI7007
) and pH4.01
(
HI7004
) buffers if you are going to measure acidic samples,
or pH7.01 (
HI7007
) and pH10.01 (
HI7010
) for alkaline
measurements.
If you need to calibrate the meter to NIST standards, use
pH6.86 (
HI7006
) instead of pH7.01 and pH9.18 (
HI7009
)
instead of pH10.01.
PROCEDURE
• Connect the pH electrode and switch the meter ON.
• Remove the protective cap from the electrode, rinse the tip
with some pH7.01 solution, then immerse the electrode into
a pH7.01 buffer solution; stir gently and wait a couple of
minutes for thermal equilibrium to be reached.
Note:
The electrode should be submerged approximately
4 cm (1½”) into the solution.
• Press
CAL
. The calibration buffer is auto-
matically recognized and the corresponding
help menu for offset / slope calibration is
displayed.
• Press the
TEMP
key to read the temperature
of the buffer.
• Press the
pH
key to read pH values. Stir
gently and wait for a couple of minutes.
• In 7.01/6.86 pH adjust the OFFSET trimmer
on the lower left of the front panel until LCD
shows the pH value at the noted temperature.
pH CALIBRATION
ACCESSORIES
pH BUFFER VALUES
AT VARIOUS TEMPERATURES
• Press
pH
.
•
Rinse and immerse the pH electrode in pH4.01 or pH10.01
buffer (2
nd
calibration point) and stir gently.
•
Press
TEMP
to read buffer temperature.
•
Press
pH
to display pH reading.
• Wait a couple of minutes and adjust the SLOPE trimmer
on the lower right of the front panel until the LCD shows
the pH value at the noted temperature.
• Press
CAL
.
The pH calibration is now complete.
WARRANTY
All Hanna Instruments
meters are warranted for two years against
defects in workmanship and materials when used for their intended
purpose and maintained according to instructions. The electrodes and
the probes are warranted for a period of six months. This warranty is
limited to repair or replacement free of charge.
Damages due to accident, misuse, tampering or lack of prescribed
maintenance are not covered.
If service is required, contact your local Hanna Instruments Office.
If under warranty, report the model number, date of purchase, serial
number and the nature of the failure. If the repair is not covered by the
warranty, you will be notified of the charges incurred. If the instrument
is to be returned to Hanna Instruments, first obtain a Returned Goods
Authorization Number from the Customer Service department and then
send it with shipment costs prepaid. When shipping any instrument,
make sure it is properly packaged for complete protection.
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner.
TEMP
pH VALUES
°C
4.01
7.01
10.01
0
4.01
7.13
10.32
5
4.00
7.10
10.24
10
4.00
7.07
10.18
15
4.00
7.04
10.12
20
4.00
7.03
10.06
25
4.01
7.01
10.01
30
4.02
7.00
9.96
35
4.03
6.99
9.92
40
4.04
6.98
9.88
45
4.05
6.98
9.85
50
4.06
6.98
9.82
55
4.07
6.98
9.79
60
4.09
6.98
9.77
65
4.11
6.99
9.76
70
4.12
6.99
9.75
75
4.14
7.00
9.74
80
4.16
7.01
9.73
85
4.17
7.02
9.74
90
4.19
7.03
9.75
95
4.20
7.04
9.76
Before using this product, make sure it is entirely suitable for your
specific application and for the environment in which it is used. Any
variation introduced by the user to the supplied equipment may degrade
the meters’ performance. For yours and the meter’s safety do not use
or store the meter in hazardous environments.
RECOMMENDATIONS FOR USERS
HI1217D
Double junction, gel filled pH-electrode with built-in
temperature sensor, DIN connector and 1 m (3.3’)
cable
HI3618D
Platinum ORP-electrode with built-in temperature
sensor, DIN connector and 1 m (3.3’) cable
HI4619D
Gold ORP-electrode with built-in temperature sensor, DIN
connector and 1 m (3.3’) cable
HI7004M
pH4.01 buffer solution, 230 mL bottle
HI7007M
pH7.01 buffer solution, 230 mL bottle
HI7010M
pH10.01 buffer solution, 230 mL bottle
HI70300M
Storage solution, 230 mL bottle
HI7061M
General cleaning solution, 230 mL bottle
HI7091M
Reducing pretreatment solution, 230 mL bottle
HI7092M
Oxidizing pretreatment solution, 230 mL bottle
HI731326
Calibration screwdriver (20 pcs)
HI76405
Electrode holder
